st: including all interactions among a set of variables

["david huffer" <dhuffer@crim.umd.edu>]

Is there a command used to include every 2-way interaction among a set
of variables in a regression-type model?� In SAS it is accomplished
quite easily but so far I haven�t run across a means other than typing
all the possible interactions.
�
Thanks in advance,
�
David 


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